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-rw-r--r--src/algebra/plot.spad.pamphlet6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/algebra/plot.spad.pamphlet b/src/algebra/plot.spad.pamphlet
index 5b5eefd3..0ab68ee1 100644
--- a/src/algebra/plot.spad.pamphlet
+++ b/src/algebra/plot.spad.pamphlet
@@ -284,7 +284,7 @@ Plot(): Exports == Implementation where
xDiff = 0 or yDiff = 0 => curve
l := lo tRange; h := hi tRange
(tDiff := h-l) = 0 => curve
--- if (EQL(yDiff, _$NaNvalue$Lisp)$Lisp) then yDiff := 1::F
+-- if (EQL(yDiff, quietDoubleNaN()$Lisp)$Lisp) then yDiff := 1::F
t := curve.knots
#t < 3 => curve
p := curve.points; f := curve.source
@@ -477,9 +477,9 @@ Plot(): Exports == Implementation where
myTrap: (F-> F, F) -> F
myTrap(ff:F-> F, f:F):F ==
s := trapNumericErrors(ff(f))$Lisp :: Union(F, "failed")
- s case "failed" => _$NaNvalue$Lisp
+ s case "failed" => quietDoubleNaN()$Lisp
r:F:=s::F
- r > max()$F or r < min()$F => _$NaNvalue$Lisp
+ r > max()$F or r < min()$F => quietDoubleNaN()$Lisp
r
plot(f:F -> F,xRange:R) ==